Added various tooltips

[elkorol]

This pr adds the react bootstrap Tooltip to various elements where similar elements already use it. Bringing these elements into conformity with the rest of the ui.

Areas affected

• maybeRenderOrganized in GalleryCard and SceneCard
• maybeRenderFlag in PerformerCard, which I've included an extra parameter of includeOverlay to the component. So that the rendered country flag in the performers detail header, where it renders the name alongside the flag. Doesn't have a tooltip.
• In the PopoverCountButton. I've included markers and for it to generate a tooltip. And made it to generate a tooltip by default to bring conformity of other ui elements to these elements.